高速电气化铁路负序和谐波统一治理方法  

Unified negative sequence and harmonic suppression control method for high-speed electric railway

作　　者：张志文[1] 黄际元[1] 罗隆福[1] 常敏[2] 李欣然[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082 [2]中南勘测设计研究院,湖南长沙410014

出　　处：《电机与控制学报》2013年第8期22-29,共8页Electric Machines and Control

基　　金：国家自然科学基金(51077044);国家高技术研究发展计划(863计划)(2011AA05A113)

摘　　要：针对高速电气化铁路牵引供电系统中的负序、谐波等电能质量问题,提出一种基于变压器感应滤波技术的负序和谐波统一治理方法。该方法利用安匝平衡原理,将感应滤波技术和静止无功发生器(SVG)系统结合起来,前者用于滤除特征次谐波,后者用于补偿负序与残余谐波电流在此基础上,进一步开发了能快速单独检测出基波负序和任意次谐波电流的检测算法。仿真结果表明:所提出的统一治理方法及检测算法的结合可以消除变压器内部负序和谐波磁势,从而使网侧中不合有相应的负序与谐波电流。基于变压器感应滤波技术的治理方案,充分发掘了变压器的潜能和现代电力电子技术的优势,能以较低的成本和较好的效果进行负序电流补偿和谐波抑制。In order to solve the power quality problems in high-speed electric railway traction power supply system, including the negative sequence and harmonic currents, a new unified control method for negative sequence and harmonic was proposed, which was based on the transformer inductive filtering technology. It combined the inductive filtering technology and static var generator（SVG） system, employ- ing the ampere-turn balance principle. The former was used to suppress characteristic harmonics, and the latter was used to compensate negative sequence and the remaining harmonics. Furthermore, the detec- tion algorithm to quickly and separately detected fundamental negative sequence and random harmonic currents was achieved. Finally, the simulation results show it fulfill the total elimination of negative and harmonic magnetic potential, so that the network side don＇ t contain the corresponding negative sequence and harmonic currents. Based on the treatment plan of transformer inductive filtering technology, it ful- ly exploits the potential of the transformer and the advantages of modern power electronics technology, compensates negative sequence current and control harmonic current at a lower cost and better results.

关 键 词：电气化铁路 变压器 感应滤波 安匝平衡原理 负序和谐波磁势 

分 类 号：TM922.32[电气工程—电力电子与电力传动]